Light cache glossy rays reflect flicker

[scottzhao]

Hello, I use light cache for glossy rays, I found the reflect pass has flicker but I save the irradiance map, the flicker only at the reflection. So I think it's the light cache glossy rays flicker. How can I solve this problem? Increase the light cache parameters? I was render 2k images, and I set the subdvis 1350, sample size 4cm, check on world scale, use camera path and use light cache for glossy rays. Thank u very much!

[vlado]

Do you have any moving objects in the scene, or only the camera? If it's only the camera, then save the light cache to disk too. If you have moving objects, then turn on the "retrace" option for the light cache.

Best regards,
Vlado

[scottzhao]

Thanks for your reply, Vlado! There has no moving objects, just camera fly though animation. So which mode I use to save light cache map?"fly-though"mode or "single frame"?and save light cache map at per frame or by 10 or 20 frame?

[vlado]

Thanks for your reply, Vlado! There has no moving objects, just camera fly though animation. So which mode I use to save light cache map?"fly-though"mode or "single frame"?and save light cache map at per frame or by 10 or 20 frame?

Render just one frame with the mode set to "fly-through". Then save the light cache and set the mode to "from file" with the saved file. That's all.

Best regards,
Vlado

[scottzhao]

Thank you! I will try it.